body {
    background: url('http://mms2.baidu.com/it/u=2059149591,1563175073&fm=253&app=120&f=JPEG?w=600&h=486');
}

#title {
    font-family: "新宋体";
    position: absolute;
    color: brown;
    font-size: 60px;
    text-align-last: center;
    left: 40%;
    top: 10%;
}

#content {
    position: absolute;
    top: 50%;
    /*顶部到元素*/
    left: 30%;
    width: 25%;
    height: 400px;
    border-radius: 25px;
    /*边框圆角*/
    margin-top: -200;
    /*边缘到底部*/
    margin-left: 100px;
    background-color: #FBEADF;
    text-align-last: center;
    /*这里做一个半透明效果*/
    filter: alpha(Opacity=60);
    -moz-opacity: 0.8;
    opacity: 0.8;
}

#username {
    color: #5fa1cc;
    font-size: 15px;
    text-align: center;
    border-radius: 25px;
    /*边框圆角*/
    outline: none;
    border: none;
    height: 35px;
    width: 280px;
}

#password {
    color: #3498db;
    font-size: 15px;
    text-align: center;
    border-radius: 25px;
    outline: none;
    border: none;
    height: 35px;
    width: 280px;
}

#email {
    color: #3498db;
    font-size: 12px;
    text-align: center;
    border-radius: 10px;
    outline: none;
    border: none;
    height: 25px;
    width: 150px;
    margin-top: -130px;
    margin-left: 30px;
    /* visibility: hidden; */
    display: inline-block;
}

#send {
    background: #d4a797;
    border-radius: 5px;
    border: none;
    /*边框宽度0*/
    height: 20px;
    width: 40px;
    /* padding:5px 10px;上下填充10 左右5 */
    font-size: 10px;
    /* padding: 1px 1px; */
    color: #fff;
    cursor: pointer;
    outline: none;
    display: inline-block;
    margin-left: 10px;
}

#activecode {
    color: #3498db;
    font-size: 12px;
    text-align: center;
    border-radius: 10px;
    outline: none;
    border: none;
    height: 25px;
    width: 100px;
    margin-top: -130px;
    margin-left: 30px;
    /* visibility: hidden; */
    display: inline-block;
}

#reset {
    background: #d4a797;
    border-radius: 5px;
    border: none;
    /*边框宽度0*/
    height: 20px;
    width: 40px;
    /* padding:5px 10px;上下填充10 左右5 */
    font-size: 10px;
    /* padding: 1px 1px; */
    color: #fff;
    cursor: pointer;
    outline: none;
    display: inline-block;
    margin-left: 10px;
}

#forg {
    visibility: hidden;
}

#res {
    visibility: hidden;
}

#denglu {
    background: #F1A992;
    border-radius: 20px;
    border: none;
    /*边框宽度0*/
    height: 40px;
    width: 80px;
    /* padding:5px 10px;上下填充10 左右5 */
    font-size: 18px;
    padding: 5px 18px;
    color: #fff;
    cursor: pointer;
    outline: none;
    display: block;
    margin-left: 155px;
}

#content h4 {
    color: white;
    font-size: 30px;
}

#forget {
    font-size: 12px;
    color: rgb(150, 144, 144);
    margin-right: 1px;
    margin-bottom: 5px;
    cursor: pointer;
    text-decoration-line: underline;
}

h2 {
    text-align: center;
    color: #3194d0;
    font-size: 20px;
}

.sign {
    width: 100%;
    height: 30px;
    margin-bottom: 0;
    vertical-align: middle;
}

.box {
    width: 350px;
    height: 260px;
    margin: 0 auto;
    margin-top: 200px;
    border: solid 1px #3194d0;
    border-radius: 25px;
    filter: alpha(Opacity=60);
}

.sign-in-button {
    width: 100%;
    padding: 9px 18px;
    font-size: 18px;
    border: none;
    border-radius: 25px;
    color: #fff;
    background: #3194d0;
    cursor: pointer;
    outline: none;
    display: block;
    clear: both;
}

.activebtn {
    width: 100%;
    padding: 8px 15px;
    font-size: 14px;
    border: none;
    border-radius: 25px;
    color: #fff;
    background: #C9E0FF;
    cursor: pointer;
    outline: none;
    display: block;
    clear: both;
}